Regeneration method for activated carbon adsorbed and saturated by refractory organics

A technology of refractory organic matter and activated carbon, which is applied in the regeneration field of refractory organic matter adsorbed and saturated activated carbon, which can solve the problems of time-consuming and laborious, generation of regeneration waste liquid, etc., and achieve the effect of simple equipment, improved pore structure and adsorption performance, and convenient operation

Inactive Publication Date: 2012-09-12
DONGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method takes out the activated carbon, which is time-consuming and lab

Method used

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  • Regeneration method for activated carbon adsorbed and saturated by refractory organics
  • Regeneration method for activated carbon adsorbed and saturated by refractory organics
  • Regeneration method for activated carbon adsorbed and saturated by refractory organics

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Embodiment 1: Static adsorption experiment

[0028] The first step: Weigh 1g of coconut shell granular activated carbon produced by Songhua Activated Carbon Company, measure 400ml of disperse dye biochemical wastewater (COD=326mg / L) and stir and absorb for half an hour, filter out the activated carbon, and measure the COD of the wastewater;

[0029] Step 2: Turn on the ultrasonic generator, connect the activated carbon obtained in the first step with the ultrasonic generator, the ultrasonic frequency is 22kHz, and the power is 30W / dm 3 ;

[0030] The 3rd step: prepare the ferrous sulfate solution that mass content is 20%, pH is adjusted to 3, pass in the gac obtained in the second step by the amount of 0.2ml ferrous sulfate / g gac;

[0031] The 4th step: prepare the hydrogen peroxide solution that mass content is 10%, according to the amount of the ferrous sulfate solution that adds in the 3rd step, pass 0.9ml hydrogen peroxide in the activated carbon that the 3rd step ...

Embodiment 2

[0041] Embodiment 2: dynamic adsorption experiment

[0042] Such as figure 1 As shown, one end of the constant flow centrifugal pump 2 is connected to the water inlet pipe 1, and the other end is connected to the lower left end of the dynamic adsorption column 3, and the flow rate is set to 28m / h. The dynamic adsorption column 3 is 0.34m high and has a radius of 0.01m. The upper end of the dynamic adsorption column 3 is connected to the water outlet pipe 5, and the lower end is connected to the ultrasonic generator 4, and the adjusted power is 300W.

[0043]The first step: take 50g of 20 mesh coconut shell granular activated carbon 6 from Songhua Activated Carbon Company, measure 2000ml of disperse dye biochemical wastewater (COD=510mg / L) and stir and adsorb for half an hour, then filter the activated carbon 6;

[0044] The second step: configure a ferrous sulfate solution with a mass content of 30%, and adjust the pH value to 2;

[0045] The third step: take 40g of the act...

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Abstract

The invention discloses a regeneration method for activated carbon adsorbed and saturated by refractory organics. The regeneration method for the activated carbon adsorbed and saturated by the refractory organics adopts Fenton reagents to oxidize and regenerate the activated carbon that absorbs disperse dye waste water. The regeneration method particularly comprises the steps as follows: the collaborative cleaning function and the catalytic action of ultrasonic waves are utilized, ferrous iron ions react with oxydol under the acidic condition to generate -OH; in addition, -OH has very high oxidative potential, so that -OH can oxidize the organics absorbed on the surface of the activated carbon into low molecular weight organics or mineralize the organics absorbed on the surface of the activated carbon to generate CO2 and H2O without selectivity, so as to lead the activated carbon to restore the adsorption activity. The regeneration method has the advantages of simple equipment, convenience in operation, low operating cost and medicine cost, high regeneration efficiency, more regenerated times and short regeneration time.

Description

technical field [0001] The invention relates to a regeneration method for activated carbon adsorbed and saturated by refractory organic matter, in particular to a technique for regenerating and utilizing activated carbon adsorbed and saturated by refractory organic matter through the oxidation of Fenton-like reagents, ultrasonic cleaning and coordinated degradation. Background technique [0002] Activated carbon has a highly developed pore structure and a large specific surface area, and is widely used in various industries. It can effectively adsorb harmful substances in water, such as organic matter and heavy metal ions, to purify wastewater. However, the high price of activated carbon makes it difficult to put activated carbon into practical application. In addition, activated carbon is also a product that consumes a lot of resources and energy. If the saturated activated carbon is not recycled, it will be a great waste of resources and will cause secondary pollution. ...

Claims

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Application Information

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IPC IPC(8): B01J20/34C01B31/08C01B32/36
Inventor 陈泉源王密灵冯玥徐万福柳欢欢李新颖
Owner DONGHUA UNIV
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